解答

✨ 最佳解答 ✨

6.
EF = 9/4,FG = 3,GH = FC = 9-BF = 9-(9/4) = 27/4
EF+FG+GH = (9/4)+(27/4)+3 = 12

8.
OD : DE = OA : AB
AB = 2
OD : DE = OB : BC
BC = 3
OC = 6+3 = 9

9.
EH//FG,EF//HG,所以EFGH是平行四邊形
AE : AB = EH : BD
EH = 7
EFGH = 7*8 = 56

10.
BC : CA = 2 : 3 = 3 : x
x = 9/2

Mer

8 是平行四邊形 EFGH的高
AE : EB = AI : IO
1 : 2 = AI : IO
AO = 6,所以 IO = 4

ZY

理解了!!謝謝謝謝~🫶🏻

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